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[CN201810115803.X] Title of an energy-saving hydraulic press: Application number of an energy-saving hydraulic press: CN201810115803.X Applicant: Yangli Group Co., Ltd. Application Date: 2018-2-6 Patent Type: Invention Application The present invention relates to an energy-saving hydraulic press. The bottom center of the hydraulic pad is connected with a hydraulic pad piston cylinder, and the four corners of the hydraulic pad are respectively connected with the top of the hydraulic pad piston cylinder, the outlet of the servo pump is respectively connected with the inlets of the hydraulic pad control oil circuit, the eleventh cartridge valve and the twentieth cartridge valve, the eleventh cartridge valve is controlled by the eighth electromagnetic reversing valve, and the outlet of the eleventh cartridge valve is connected with the accumulator; The outlet of the twentieth cartridge valve is connected to the oil circuit of the lower chamber of the slider master cylinder, the twentieth cartridge valve is controlled by the sixteenth electromagnetic reversing ball valve, and the eighth and sixteenth electromagnetic reversing ball valves are all two-way valves. The bottom of the accumulator is connected to the inlet of the ninth cartridge valve, the outlet of the ninth cartridge valve is connected to the inlet of the eighth cartridge valve, and the outlet of the eighth cartridge valve is connected to the main oil pipe of each hydraulic cushion plunger cylinder. The hydraulic press can pre-charge the accumulator by using the oil from the lower cavity when the slider is quickly down, which can effectively save energy and make the smooth transition of the slider's fast down rotation.
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